Isotopes are those nuclei of an element that have:
Correct answer: D. Same atomic number but different mass number
- A. Same mass number but different atomic number
- B. Same mass number as well as atomic number
- C. Different mass number as well as atomic number
- D. Same atomic number but different mass number
Explanation
The isotopes of an element have the same number of protons and electrons, but different numbers of neutrons. So the atomic number would be the same and the mass number or atomic mass would be different.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Nuclear Physics
Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
Practise Nuclear Physics
1,254 free Nuclear Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Nuclear Physics questions
10 Joules of energy is absorbed by a 10-gram mass from a radioactive source. What is the absorbed dose?
The emission of alpha particles from a radioactive substance causes:
Among the three types of radioactive radiation, which has the strongest penetration power?
Which one of the following emissions takes place in the nuclear reaction? 90Th234 → 91Pa232 + _ + 20n1
The emission of radiation from radioactive substances is:
The half-life of radium is about 1600 years. If 100 g radium exists now, 25 g will remain undecayed after: